Pipe-wrench



(No Model.)

' J. 0. DEGNAN.& 0. A BENNETT.

PIPE WRENGH.

No. 361,579. Patented Apr. 19, I887.

mznesses .Inve nto Ts N. PETERS. mammo ra hy. Wamingmn. 0:0,

UNITED STATES PATENT OFFICE.

JOHN G. DEGNAN AND CHARLES ArBENNETT, OF MIDDLETOWN, NEW YORK.

PIPE-WRENCH.

SPECIFICATION forming part of Letters Patent No. 361,579. dated April19, 1887.

Application filed February '7, 1887. Serial No. 226,735. (No model.)

To all whom, it may concern.-

' to make and use the same.

The object of our invention is to provide an adjustable pipe-wrenchwhich shall be simple in construction, and which can be more quickly andconveniently manipulated than the wrenches now in use.

In the accompanying drawings, Figure l is a side elevation of the-wrenchwhen grasping a pipe. Fig. 2 is a side elevation of the wrench when thehold is relaxed preparatory to taking a grip 011 a pipe. Fig. 3 is a topor edgewise view of the wrench, showing the relations of its severalparts from that stand point.

In the drawings, a represents a sliding jaw; b, a lever with a serratedhead, 0.

(2 represents a dog, pivoted to the lever b, which catches in the teethe on the edges of the heel or back of the sliding jaw and holdsthejawsin position when grasping an object.

f represents a spring, which is fastened by a screw, 9, to the lever b,and acts upon the dog (Z by a constant pressure to force it into itsproper posit-ion in the teeth e in the manipulation of the wrench.

h represents a slot in the slidingjaw a, which allows the jaw to slideback and forth upon the pivot-pin p, which secures the dog in place.

From the foregoing description the operation of the device will be veryreadily understood without any further or detailed explana- ,tion.

Having now described our invention, what we consider new, and wish toclaim, is-

1. In a pipe-wrench, the combination, with a lever and slidingjaw,thelatter having ratchet-teeth upon one edge of the heel of the same, of adog, a part of which pivots thejaw and lever together and another partof which engages the ratchet-teeth on the jaw, substantially asdescribed.

2. In a pipe-wrench, the combination, with the jaw provided with a slot,and having ratchet-teeth on one edge of the heel of the same, of a leverand dog, the said lever and jaw being pivoted together through the slotin thejaw, and said dog having a part which forms the pivot for thejawand lever and another part which engages the ratchet of the jaw,substantially as described.

3. In a pipe-wrench, a sliding jaw provided with a slot, and havingratchet-teeth on one edge of the heel of the same, in combination with alever, the two being pivoted together through the said slot, and a dogembracing thejaw and lever and having a part forming the pivot of thelever and jaw and another part engaging the ratchet on the jaw, and aspring attached to the lever and engaging the dog, substantially asdescribed.

In testimony whereof we affiX our signatures in presence of twowitnesses.

JOHN C. DEGNAN. CHARLES A. BENNETT.

Witnesses:

J. P. CRANS, (3120. M. BUsH.

